Perhaps the problem rests on the necessary if unsustainable distinction between improvisation and composition.

Plato made the necessary distinction between grades of being and types of negation.

Because he made no necessary distinction between truth and falsehood, he was in his natural element.

And we go to great lengths to draw the necessary distinctions between ordinary crime and politically related instability.

But many do, and there's no way to make the necessary distinctions without first hearing and evaluating their claims.

Totems, he argues, are just another way to create necessary distinctions within a larger group.

It shows that the public can make the kind of distinctions necessary for addressing this complex debate.

That may be a necessary legal distinction but why shouldn't the proscribed period be 5 or 10 years?

Even so, it is important in this context to make the necessary distinction between civil and military installations.

There is a necessary distinction to be made between modern style and modern ballet.